Ni-MH 电池4C 充电方法研究*

利用笔者前期申请的两个相关实用新型专利技术和一个发明专利技术,提出一种4C 快速充电的方法,包括识别和判定电池是否适用4C 大电流充电、快速充电方法、快速充电的终止条件、维护性充电以及充电完成的确认等过程。经反复测试验证,该方案只需15分钟就可以使电池的充电容量达到90%以上,同时还延长 Ni-MH 电池的循环寿命。     

基于RUP的C4ISR体系结构设计

在C^4ISR体系结构的基础上，结合对三种体系结构视图功能、作用和相互关系的分析，从系统设计方法的角度出发，对结构化设计方法与面向对象设计方法进行了阐述和比较。提出了运用Rational统一过程（RUP）对C4ISR体系结构进行设计，通过把软件开发的生命周期划分成若干阶段和一系列的循环重复，采用渐增、螺旋上升的模式，使被开发的系统在一次次的循环重复中逐渐精化与完善，直至完成系统的开发。     

Computer skills instruction for pre-service teachers: A comparison of three instructional approaches

The computer self-efficacy of teachers contributes positively to their technology integration self-efficacy. Many studies have examined instructional strategies that foster computer self-efficacy but not their corresponding impact on teachers’ technology integration self-efficacy. This study investigated the instructional strategies used for pre-service teacher computer skills instruction and their corresponding impact on teacher computer self-efficacy and technology integration self-efficacy. Using a multiple case-study approach, video recordings were made of the class sessions of three participating instructors throughout a semester. Content analysis of these video recordings found the instructors using three approaches of computer skills instruction: Extensive behavioral modeling, targeted behavioral modeling, and independent problem-solving. Analysis of pre and post-study student survey responses also found that the three instructional approaches raised their perceived computer self-efficacy. However, the effect sizes were largest when the independent problem-solving approach was used. This approach was also found to have had better motivational effects on students than the extensive behavioral modeling approach. On the other hand, computer skills instruction increased students’ technology integration self-efficacy only when instructors modeled teaching-related examples and provided students with multiple mastery experiences of technology integration practices. The applications of the three computer skills instructional approaches for teacher education are discussed.     

多芯片组装技术中的C4技术

本文主要论述了MCM工艺过程及多芯片组装技术中的C4技术。并对MCM种类、MCM关键工艺、MCM凸点的制作方法等做了简单介绍。     

基于UML的C4ISR体系结构设计过程

本文以C4ISR体系结构框架2.0为体系结构的描述规范,在分析C4ISR体系结构和我军军事信息系统体系结构的基础上,总结了体系结构设计的主要技术与方法,结合C4ISR体系结构的通用开发过程,提出了基于统一建模语言(UML)的C4ISR体系结构设计过程.并较深入地探讨了在C4ISR体系结构设计过程中用统一建模语言(UML)中的图表进行开发的详细步骤,以及体系结构产品的开发流程.     

指挥信息系统的可靠性设计

本文主要介绍了软件的可靠性技术方法,包括避错设计、查错设计和容错设计。针对指挥信息系统,给出实际实现避错、查错和容错的软件设计方法。实际应用表明,该可靠性设计的应用切实提高了系统的可靠性能。     

一种基于无线多媒体传感器网络的C4ISR视频侦察系统

C4ISR（指挥信息系统）在现代信息化作战中正显示出其强大的功能,而其中信息的获取又显得地位尤其突出。从指挥信息系统视频侦察系统的需求出发,利用WMSN（无线多媒体传感器网络）的自组织性、强壮性的特点,设计了一种基于无线多媒体传感器网络的C4ISR视频侦察系统,提出了其网络体系结构,给出了其节点和基站的设计方法和通信协议的实现。     

Situation awareness measurement: a review of applicability for C4i environments

The construct of situation awareness (SA) has become a core theme within the human factors (HF) research community. Consequently, there have been numerous attempts to develop reliable and valid measures of SA but there is a lack of techniques developed specifically for the assessment of SA in command, control, communication, computers and intelligence (C4i) environments. During the design, development and evaluation of novel systems, technology and procedures, valid and reliable situation awareness measurement techniques are required for the assessment of individual and team SA, in order to determine the improvements (or in some cases decrements) resulting from proposed design and technological interventions. The paper presents a review of existing situation awareness measurement techniques for their suitability for use in the assessment of SA in C4i environments. Seventeen SA measures were evaluated against a set of HF methods criteria. It was concluded that current SA measurement techniques are inadequate by themselves for use in the assessment of SA in C4i environments, and a multiple-measure approach utilising different approaches is recommended.     

指挥自动化系统仿真模型的描述与实现

指挥自动化系统是打赢高技术战争的关键。对指挥自动化系统进行作战效能评估具有重大意义。指挥自动化系统效能仿真与评估将系统、信息、仿真三者有机结合,以指挥自动化系统的支持能力为中心。该文主要研究其中的仿真模型,采用UML中的类图与对象图对指挥自动化系统仿真模型进行描述,并利用C 语言实现了模型描述。     

C~4ISR系统技术参考模型研究

C4ISR系统技术参考模型是C4ISR系统技术体系结构的核心。根据C4ISR系统的特点,结合工作流管理系统中的工作流参考模型和CORBA技术,建立了C4ISR技术体系结构的技术参考模型,探讨了模型的组成和功能,为C4ISR系统的综合集成提供了一种有效的技术实现途径。     

JX4C DPS中IKONOS立体像对的一体化处理

本文简要介绍了IKONOS遥感卫星系统及其立体影像数据的特点,给出了IKONOS影像立体模型的构建原理与方法,探讨了IKONOS影像的区域网平差方案,对少控制或无控制测图做了初步分析。随后,描述了JX4C数字摄影测量工作站中对IKONOS立体影像从数据预处理、单模型定向、区域网平差到区域DLG、DEM/DSM、DOM等测绘产品生产的一体化处理流程。文章最后指出,以IKONOS为代表的高分辨率遥感影像在测绘领域的广泛应用标志着卫星摄影测量与制图时代的开始。     

C4ISR体系结构产品工具开发研究

文章简要介绍了C4ISR体系结构框架、产品以及核心体系结构数据模型 ,提出了体系结构产品工具集的框架 ;设计并实现了指挥关系图工具 ,以此说明体系结构产品工具集的开发过程。     

C~4ISR仿真软构件生成器的设计与实现

构件技术是近几年来迅速发展并受到高度重视的一门技术。文章首先介绍了C4ISR仿真软构件生成器的总体框架结构,接着讨论了仿真软构件生成器的关键技术问题。     

一个基于CORBA的C4ISR安全体系结构实例

C^4ISR是一种类型的电子信息系统，安全可靠是它的生命线。通过分析CORBA及其安全服务，结合C^4ISR系统自身的特点，设计了一个基于CORBA的C^4ISR系统安全体系结构的实例，给出了实现CORBA安全服务以及将其应用到C^4ISR系统安全体系结构中的解决方案。     

Empirical comparison of three metrics suites for fault prediction in packages of object-oriented systems: A case study of Eclipse

Packages are important high-level organizational units for large object-oriented systems. Package-level metrics characterize the attributes of packages such as size, complexity, and coupling. There is a need for empirical evidence to support the collection of these metrics and using them as early indicators of some important external software quality attributes. In this paper, three suites of package-level metrics (Martin, MOOD and CK) are evaluated and compared empirically in predicting the number of pre-release faults and the number of post-release faults in packages. Eclipse, one of the largest open source systems, is used as a case study. The results indicate that the prediction models that are based on Martin suite are more accurate than those that are based on MOOD and CK suites across releases of Eclipse.     

军队指挥自动化系统信息安全防护研究

指挥自动化系统的发展使得网络信息资源高度共享，然而一体化、网络化的发展使信息安全问题也更为突出。依据军队指挥自动化系统中各应用系统的特点和安全要求，提出了一种新的信息安全防护系统设计方案，并详细阐述了动态网络安全模型的技术防御体系。     

基于S3C2410与MPEG-4的播放器的设计和实现

流媒体(Streaming Media)是一种新兴的网络传榆技术,广泛应用在互联网上实时传输、播放音、视频等多媒体数据,流媒体技术包括流媒体数据的采集、音/视频编解码、存储、传输以及播放等领域.嵌入式流媒体,顾名思义,需要考虑嵌入式系统以及流媒体技术两方面的特点.本文介绍了一种基于S3C2410与MPEG-4的嵌入式流媒体播放器的软件和硬件的设计与实现.     

防空C4I战术通信网组网的研究

提出了防空C^4I战术通信网组网的流程，逐个地分析了流程中的各个过程，并介绍了目前较流行的网络模拟工具，这对未来防空C4I战术通信网的组网具有一定的指导意义。     

A comparison of two Bayesian approaches for uncertainty quantification

Statistical calibration of model parameters conditioned on observations is performed in a Bayesian framework by evaluating the joint posterior probability density function (pdf) of the parameters. The posterior pdf is very often inferred by sampling the parameters with Markov Chain Monte Carlo (MCMC) algorithms. Recently, an alternative technique to calculate the so-called Maximal Conditional Posterior Distribution (MCPD) appeared. This technique infers the individual probability distribution of a given parameter under the condition that the other parameters of the model are optimal. Whereas the MCMC approach samples probable draws of the parameters, the MCPD samples the most probable draws when one of the parameters is set at various prescribed values. In this study, the results of a user-friendly MCMC sampler called DREAM_(ZS) and those of the MCPD sampler are compared. The differences between the two approaches are highlighted before running a comparison inferring two analytical distributions with collinearity and multimodality. Then, the performances of both samplers are compared on an artificial multistep outflow experiment from which the soil hydraulic parameters are inferred. The results show that parameter and predictive uncertainties can be accurately assessed with both the MCMC and MCPD approaches.     

层次建模分析方法在C4ISR系统中的应用

C4ISR系统是一个规模庞大、层次分明的离散动态系统。文章提出了一种面向C4ISR系统的UML和Petri网结合的建模分析方法。该方法采用从上到下的层次分析方法。用扩展的UML模型对系统组织结构和系统的静态特征进行描述,用扩展的Petri网模型描述和分析系统动态特性,通过相应的规则将Petri网模型转化成状态图和序列图。新方法可以对系统要求进行验证,同时还可以编程实现。最后通过该方法,对一个C4ISR系统进行了建模分析。